Applying or releasing the parking brake
WARNING Risk of skidding or an accident by braking with the parking brake
If you have to brake your vehicle with the parking brake, the braking distance is considerably longer and the wheels may lock. There is an increased risk of skidding and/or accident.
Only brake the vehicle with the parking brake if the service brake has failed.
In this case, do not apply the parking brake with too much force.
If the wheels lock, immediately release the parking brake as much as required for the wheels to turn again.
WARNING Risk of fire and an accident if the parking brake is not released
If the parking brake is not fully released when driving, the following situations can occur:
the parking brake can overheat and cause a fire
the parking brake can lose its holding function
Completely release the parking brake before driving off.
The brake lights do not light up when you brake the vehicle with the parking brake.
To apply the parking brake:
depress parking brake pedal 
firmly. When the engine is running, the 
indicator lamp lights up in the instrument cluster. If the vehicle is in motion, a warning tone sounds.
To release the parking brake:
depress the brake pedal and keep it depressed. Pull release handle 
.
. The parking brake is released abruptly. The red indicator lamp in the instrument cluster goes out.